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Keithley 2000 DMM Repair
I’ve been shopping around for a nice bench DMM for a while now, so I bought a busted Keithley 2000 off Ebay thinking that it would be an easy repair. I assumed that all the input protection in a modern DMM should fail first to protect anything important, and all I would need to do ...
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Flying Android Project
In 2009, I was challenged by [govt agency] via GTRI to develop an Unmaned Aerial Vehicle (UAV) which is piloted by a smartphone. In particular, only the sensors on the phone may be used and the flight controller must run on the smartphone. Custom electronics were allowed to interface the phone to the airframe (PHY) ...
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GIT URL Changed
I’ve started using Cloudflare and this has required a small change in my git url. I’ve fixed the url in all posts describing my repositories. If you have been collaborating with me on a project, read on to update your repos. In the past, you might have checked out a repo from me like git ...
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LaTeX on WordPress!
Yay, now I can blog like I think… in !
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Bike Thief
So I just caught a bike thief. Here’s what happened. I roll up to the bike racks between E15 and MIT medical. No spots under the overhang, so I park near the repair station. Then I see a green bag with a pair of bolt cutters peeking out of it leaning up against the wall ...
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RoboCup Electronics Museum
When I flew home to Atlanta over Thanksgiving, I had the opportunity to visit the “RoboJackets RoboCup Electronics Museum”. Really a nice trip down memory lane. I was on the team from its inception in 2007 till I graduated in 2009. I had the opportunity to lead the team from 2007 to 2009 (system design ...
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Teaching Ale Update
After a few (far too many) weeks, we finally re-racked the Teaching Ale. It was fairly straightforward. Just as before, we meticulously cleaned and sanitized everything that will touch the young beer. We cleaned the keg and a hose. To siphon the beer, we first moved the carboy to a the counter and the keg ...
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HP 5257A Detail
I received a question from Ary Lems about the HP 5257A Transfer Oscillator I tore down a few months ago. He writes, About this one I do have a question. On one of the pictures there is a pc board with nr 05257-60211. On this pc board is an plastic srew and washer placed on ...
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Teaching Brewing
Photos from the brew courtesy of Micah Eckhardt This Friday and Saturday the Media Lab hosted its first Festival of Learning and I volunteered to teach beer brewing. I’m hoping to use this post as a repository for some of the content covered and some of the information I skipped over in the handout. This ...